Even the most angelic goody-goody has a vamp lurking somewhere in her heart of hearts. In some of this summer's biggest movies, Hollywood's sweetest stars are behaving badly—and looking gorgeous doing so.

When hunting for employment these days, every little detail matters. Your experience and your resumé get you in the door—and fair or not, your appearance counts too. Fifty-seven percent of managers believe an unattractive (but qualified) job candidate will have a harder time getting a new job, and 68 percent feel that looks will continue to affect their job-performance rating once they're hired, according to a 2010 Newsweek poll. One simple way to look ultraprofessional: having the right hair. Here are eight style tweaks that'll make you look as good in person as you do on paper.

The Academy Awards showcase the best of the year's films—and we think the red carpet does the same for celebrity hair. While we have to wait to see this year's styles, in the spirit of nostalgia, we've picked our favorite Oscar hair looks from the past decade—and asked hairstylist Nathaniel Hawthorn how to re-create them at home.